Finding the Fourth Proportional to 135,821.80, 203,330.94 and 100,916.20
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Solution
The fourth proportional to 135,821.80, 203,330.94 and 100,916.20 is: 151,075.79
Step by Step Solution
- Step 1: Write the proportion equation
135,821.80 : 203,330.94 = 100,916.20 : x - Step 2: Convert to fraction form
135,821.80/203,330.94 = 100,916.20/x - Step 3: Cross multiply
135,821.80x = 203,330.94 × 100,916.20 - Step 4: Simplify right side
135,821.80x = 20,519,385,807.23 - Step 5: Solve for x
x = 20,519,385,807.23/135,821.80 - Step 6: Final answer
x = 151,075.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.